Abstract

Hypovitaminosis D is supposed to be associated with diabetes mellitus and metabolic syndrome. Defects in pancreatic β cell function and/or insulin sensitivity are often present, to develop glucose intolerance or type 2 diabetes mellitus. There are accumulating evidence that vitamin D may influence these mechanisms. Aim of our study was to test the hypothesis of an association between hypovitaminosis D and insulin resistance in diabetic patients and normal subjects. We studied 101 type 2 diabetic patients and 60 controls. After detailed physical examination the venous blood was withdrawn, anthropometric measurements were taken, then an indirect measure of insulin resistance was calculated. Study population composed of diabetic and control groups. An indirect insulin resistance index was calculated and compared with other parameters including their 25 hydroxy vitamin D3 levels. In diabetic patients without insulin resistance; fasting blood glucose, fasting insulin and indirect insulin resistance index levels were significantly lower compared to diabetic patients with insulin resistance (p

Key words: Diabetes Mellitus, type 2, insulin resistance,vitamin D